Tissue-unthreading means



P. STRUD EL 5 90 TISSUE UNTHREADING MEANS Filed jpril 20, 1923 fig. 7.

Patented Aug. 18,1925.

UNITED STATES PATERNE s'rntrnnn, or HANOVER-LINDEN, NEAR HANOVER,GERMANY.

TISSUE-UNTHREADING MEANS.

Application filed April 20, 1923. Serial No. 6333995.

To all whom it may concern:

Be it known that I, PATERNE Srniionr, a citizen of France, and aresident of Haasemannstrasse 9, in the town of I'IL11- over-Linden, nearHanover, Germany, have invented certain new and useful Improvements inTissue-Unthreading Means, of which the following is a specification.

This invention has reference to a machine for the unthreading ordisentangling of tissues and woven fabrics generally by means ofrevolving series of needles to which the article to be treated is fed byfluted. rollers, and it is intended to devise means for improving andfacilitating the operation of machines of this kind, and to insure amore perfect operation and to prevent the tearing of the fabrics in theoperation of such machine, and to further improve and perfect theunthreading or disentangling process.

In the machines of the kind referred to the material is fed to therevolving series of needles by means of two inter-engaging flutedrollers. There is the drawback, however, with these machines that thereis a comparatively large distance between the nip of the two flutedrollers fort-he retaining of the material and the points of the needles,so that in accordance with the resistance presented by the materialunder treatment larger or smaller sized pieces are torn from thematerial, instead of producing the disentangling in a threadwiseprocedure.

In order to decrease this distance as much as possible so as to insurethe seizing of the several individual threads with certain- ,ty, and tocause them to become detached with the least possible likelihood ofbeing torn the fluted roller in accordance with my invention is soarranged as to cooperate with the cavities of the key-board likeretaining means in such a manner that the material of the fabric isforced into the grooves of the delicate fluted roller rotating in suchcavity, and is there retained during the entire movement, and is movedwithin the imnature of the tissue, so that instead of an chines in whichthe fabric is supported upon a grooved counter-plate and is thenunthreaded by series of reciprocating needles which cause the threadsemployed to be slowly witlrdrawn. Such machines, however, present theinconvenience of uneconomical operation in view of the reciprocation ofthe needles, and in view of the difficult frequent positioning andsecuring of the several fabric portions; nor do they admit withoutalterations and withouttedious operations of the direct treating of anysize and configuration of remants of fabrics, and my invention in viewthereof is so designed and constructed as to obviate the variousdiiiiculties of the machines referred to. I

also desire to point out that themachine according to my invention is,furthermore, distinguished from the feeding means heretofore employed inconnection with such machines, and consisting of a roller and conca-vedkeyboardshaped retaining means, inasmuch as in such machines which areemployed as boaters the feeding roller is of entirely diiferentconstruction, and there is no such depression with a reduced thicknessof edge adjacent the operating portion, so that with heating machines ofthe kind referred to it is impossible to produce the results of myinvention, the fabric failing to .be presented for unthreading to thecoopcrating members, by which means accordmg to this invention thewlthdrawing of .the individual threads is effected systematically 1n aregular and reliable manner.

The invention will be further'explained with reference to the accompanydrawing, showing by way of example one form of embodiment of theprinciples of the invention in Figure l in elevation, and in Figure 2 inplan view. I

The roller 1 is uniformly provided with a plurality of series of needles2 only a part of which are shown on the drawing, and is rotated in thedirection of the arrow. The fabric to be defibrated is fed by means of afeeding table 3 provided with roughenings,

substantially presenting minute teeth or needles and operating as a kindof speed regulating or braking means for the moving fabric to pluralityof supporting members 3 side by side each other, and rockably mounted ona shaft The extremities of said supporting members are provided withcavities or depressions which are pressed by weights 5 or in any othersuitable manner against the preferably longitudinally fluted roller 6which serves tor the pushing forward of the fabric and is uniformlyrotated for this purpose, The said trough shaped depression, as appearsfrom the drawing, has a reduced vertically angular substantiallybeak-shaped freely supported term el portion adjacent the combs, so as ld to be dect' as ihrea JL, .l tached iioin t I possible to the no i '1the thread is push (LO-0Y3 of the roller 6 i the member 1 and of may bected, or inst '16 following inn-men on the sha the roller 6 a gear w ol'3 is mounted meshing with a gear wheel 8 which is itself mounted uponthe shaft of a pulley 10 connected by a belt 11 or the like to thepulley 12. On the shaft of the said pulley 12 a conical drum 13 ismounted which is connected by a belt 14 to an inversely arranged conicaldrum 15 on the same shaft with the pulley 16 which re ceives movement bya belt 17 from the pulley 18 mounted on the shaft of the cylindricalroller 1. A shaft 20 with forked belt shifter 21 serves for thedisplacement of the belt 1 1 in accordance with a graduation 23 thearrangement of which is governed by the nature of the fabric to beunthreaded, so that one is enabled in this manner to obtain anabsolutely uniform regulation of the velocity of the cylinder 1 and ofthe roller 6, and it is possible in this manner to either increase orreduce the feeding speed of the fabric, and the speed of rotation of theseries of needles 2, so as to be sure that only the desired amount ofthreads may be engaged in each case by the needles 2. The graduatedscale 23 may be arranged at the top portion of the machine near thefeeding table 3, and the transmission of movement to the shaft 20 may beeffected by bevel gear wheels, and a downwardly inclined dependingshafting, not shown on the drawing and not constituting any part of myinvention.

A roller 24 with brushes 25 or the like may be provided for the purposeof detaching the fibers from the needles 2. By the combination of thetransversely disposed longitudinally fluted guide roller 6 with thebeak-like reduced terminal portions of the pivotally yielding blocks 3the individual threads are loosened and are securely and separatelycarried to the top of the beak of the members 3, and are presented tothe needles of the picking roller, so that the threads are individuallytreated and he at entire, and tearing thereof is practically obviated.After being doifed from the needles 2, the detached threads, which forthe sake of illustration may be regarded as the weft threads, though theinvention nay evidently apply as well to the removal of the warps, arecaused to pass between two rollers, not shown in the drawing, and thenceto any suitable conveying means, carrying them to any suitable kind ofcontaining or packing means. The remaining intersecting threads, which,for purposes of illustration, may be considered to be the warp threads,remain suspended more or less from the concaved member 8 in accordancewith their le gth; tl ey are combed to some extent and loosened by theneedles 2. In the case of short warp threads these drop down togetherwith the weft-s, and are carried to the conveying means along with saidwefts. In the case of fabrics being introduced into the machine at anangle to the direction of the warps or fillers, so that both the warpsand the filling or weft threads are simultaneously caught by theneedles, the entire material is submitted to a combing action, and thedisassembling of the threads, while as thorough and e'fficient as in thecase of threads in the plane of the needles, is not effected asuniformly as in the latter case which is the preferred position for thedisassembling of the threads.

The invention is herein shown and described merely in its broad aspectswithout, however, being restricted to the particular shape andarrangement of parts shown by way of example and as a matter ofexplanation, but changes and modifications may occur to suit existingconditions and the convenience of the operator, and without deviatingfrom the spirit of my invention as expressed in the claims, hereuntoappended.

I claim 1. In an unthreading device in combination yieldingly journaledsupporting means, comprising an endwise reduced, slightly upwardlycurved terminal portion, rotatable feeding means in engagement with saidcurved portion, and movably mounted thread picking means adjacent thefeeding means and the curved terminal portion.

2. In an unthreading device in combination, a plurality of adjacentlymounted and yieldingly journaled supporting means, having substantiallyparallel endwise reduced, slightly upwardly curved terminal portions,movable feeding means in engagement with said curved terminal portions,and rotatably mounted thread picking means adjacent the feeding meansand the curved terminal portions;

3. In an unthreadin'g' device in combination, a plurality of adjacentlymounted and yieldingly journaled supporting means, having substantiallyparallel endwise reduced, and slightly upwardly curved terminalportions, a fluted roller in engagement with said curved terminalportions and transversely thereto, and rotatably mounted thread pickingmeans adjacent the curved terminal portions and the fluted roller.

4. In an unthreading device in combination, a plurality of adjacentlymounted and yieldingly journaled supporting means, having substantiallyparallel endwise reduced, and slightly upwardly curved terminalportions, a longitudinally fluted feeding roller in engagement with saidcurved terminal portions and transversely thereto, a plurality ofrotatably mounted thread-picking means adjacent the curved terminalportion and the fluted roller.

5. In an unthreading device in combination, a picking roller, threadpicking means on said roller, a plurality of adj acently disposed andyieldingly journaled supporting means comprising substantially parallelendwise reduced, and slightly upwardly concaved, substantiallysectionally beak-shaped terminal portions, adjacent the thread pickingmeans, and substantially in diametrical alinement with the pickingroller, a fluted roller in engagement with said concaved terminalportions and transversely thereto and in parallel relation to thepicking roller, and thread-removing means in engagement with the threaddetaching means.

6. In an unthreading device in combination, a feeding table, a pluralityof adjacently mounted yielding supporting blocks, having substantiallyparallel endwise reduced, slightly upwardly concaved, sectionallysubstantially angular terminal portions, a substantially longitudinallyfluted roller engaging the concaved portion transversely thereto, apicking roller, substantially diametrically opposite said supportingblocks,

thread detaching means on the picking vertically angularly reducedfreely supi ported terminal portions, picking means, adjacent saidterminal portions and movable relatively thereto, and a rotatablelongitudinally fluted guide roller adjacentand above the angularlyreduced terminal portion of the blocks and transverse thereto.

8. In an unthreading device in combination, a plurality of adjacentlydisposed endwise pivoted yielding supporting blocks, having angularlyvertically reduced freely supported terminal portions, a rotatablepicking roller adjacent to said terminal portions and transversethereto, a rotatable lengthwise fluted guide roller, adjacent and abovesaid terminal portion and in parallel relation to the picking roller,respectively oppositely conical, parallelly spaced driving rollers,respectively operatively connected to the guide roller and tothefpicking roller, a displaceable common driving belt upon said conicalrollers, means adapted to displace said common belt along the conicalrollers, and an indicatorconnected to said means for controlling thedisplacement thereof.

PATERNE STRUDEL.

